(69) 



2. Holozonia. — Involucre 1-seriate, each 

 scale completely embracing aray akene. 

 Pappus of the ray hyaline. 



3. Lagophylla. — Ray flowers 5, cuneiform, 

 3-lobed. Involucre of 5 scales, each 

 cojnpletely enclosing a ray akene. Re- 

 ceptacle flat. Palea3 5, between disc 

 and ra}- . Pappus 0. 



4. Blennosperma. — Scales of the involucre 



1-seriate, united at the base, not em- 

 bracing the akene. Pappus 0. 



5. Artemisia. — Involucre imbricate, scar- 

 ious. Flowers of the ray slender, dentate. 



6. Soliva. — Flowers of the ray oo-seriate, 

 without corolla. Pappus 0. 



7. Nardosmia. — Pappus pilose. 



B. Receptacle villous. 

 1. Artemisia. 



C. Receptacle paleaceous. 



a. Anthers obtuse or sagittate at their 

 base, hut not calcarate. 



1. Lagophylla. — Ray flowers 5, cuneiform, 

 3-lobed. Involucie of 5 scales, each 

 com])letely enclosing a ray akene. Re- 

 ceptacle flat. Palece 5, between disc and 

 ray. Pappus 0. 



2. Holozonia. — Involucre 1-seriate, each 



scale embracing completely a ray akene. 

 Pappus of the ray hyaline. 



